Use of NIST Standard Reference Materials for Decisions on Performance of Analytical Chemical Methods and Laboratories

摘要

NIST Standard Reference Materials (SRMs) are used extensively for the evaluation of analytical methods and laboratory performance. It is virtually impossible for SRMs to exactly match the compositions of laboratory samples, and the SRM uncertainty may not be negligible in some applications. As a result, professional judgment and analytical expertise are needed in the selection of the most appropriate SRM. In most cases, some compromises will be inevitable. Notwithstanding these limitations, the use of SRMs is considered to be one of the best available approaches for decisions on the accuracy of measurement data. The document describes specific guidelines and applications for using SRMs to help design measurement protocols and to interpret the accuracy of measurement data.